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(No Model.) 2 sheets-#sheet 1.

G. WASHINGTON.

LAMP.

No. 589,051. Patented Aug. 31,1897'.

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v 2 Sheets-Sheet 2. G, WASHINGTON.

LAMP

Padtented Aug. 31, 1897.

GEORGE l/VASHINGTON, OF BRUSSELS, BELGIUM, ASSIGNOR TO THE GEORGE WASHINGTON LIGHTING COMPANY, OF JERSEY CITY, NEV JERSEY.

SPECIFICATION forming part or Letters patentino. 589,051, dated August 31, 1897. Appnanonneiiuiy14,i897; sannita 644.562. (Nomen.)

T all whom, it may concern: i

Be it known that I, GEORGE WASHINGTON,

of Brussels, Kingdom of Belgium, have in-` -My invention relates to an improvement inv hydrocarbon incandescent lamps, the object of the invention being to provide such a con` struction and organization of parts in a lamp of this type as will insure the vaporization of the oil by the heat of the incandescent Inantles and at the Vsame time prevent the burners or tubes connected therewith from interl cepting the light radiated from the mantles.

With this end in view the invention consists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims. i

In the accompanying drawings, Figure lis a view of a bracket-lamp embodying my invention, the lamp being shown in section. Fig. 2 is a section of the lamp, taken through the air-tubes; and Fig. 3 is a View of a portable lamp.

A represents a bracket terminating in an oil-cup a and made hollow throughout its length for the passage Vof oil or for the passage ot' an oil tube or pipe. The bracket or tube, as the case may be, is connected by a pipe h, leading from an oil-reservoir, and the oil is fed through said pipe and bracket to the oil-cup by gravity or air-pressure. Secured to the oil-cup is the vaporizing-tube B.

When :my improvements are applied to a portable lamp, as shown in Fig. 3, the vaporizing-tube would be secured directly to the neck of the reservoir of the lamp and be provided with a pipe BQ extending down into the oilreservoir. with a removable cap B2 for filling the same and the cap B2 with a screw-nipple B3, such as are used on all pneumatic bicycle-tires, for the attachment of an air-pu1np for forcing air under pressure into the reservoir.

The vaporizing-tubeV B- is provided vat its lower end with a valve-actuating shaft b for shutting off the supply of oil to the vaporizer I also provide the reservoir and is provided at its upper end With a discharge-nozzle which discharges the vapor generated into the tube C, located within the mixing-chamber. This tube O is rigidly secured to the vaporizing-tube and is in turn rigidly secured to the mixing-chamber. The tube O is located in a line With the Vaporiz- 'ing-tube and is provided at its lower end .with the lateralbranches O', which latter open 6o at their outer ends flush with` the hood E and Vare designed to convey air from outside the lamp into the tube O. The air thus drawn into the tube by the jet of vapor is intimately mixed with the vapor and passes with same into the mixing-chamber D, and as its course is deiiected in said chamber the vapor and air are intimatelycommingled and pass downlvvardly to the burners F. These burners are simply pipes in open communication with the 7o mixing-chamber and provided at their lower fopen ends with a cap or covering of perforated metal or wire-gauze. Overlapping the lower ends of the burner are the incandescent mantles G. These man- 7 5 tles are attached to the supports or holders H, and the latter are in turn secured to the tube I, Which latter projects from tube O to receive the upper end of the vapOrizing-tube. These mantles and burners are on opposite sides of 8o the vaporizing-tube and are sufficiently close thereto to heat same to a temperature required for the vaporization of the oil.

vTo start the lamp, a small quantity of oil is admitted to the vaporizing-tube and the tube heated by burning alcohol in the starting-cup J. As the tube becomes heated the oil therein vaporizes and, escaping from the tube, passes `into the mixingchamber, and after comminglin g with the air drawn therein passes down 9o through the burners and is ignited by the alcohol flame.4 After the burners are once v.started the heat therefrom rapidly vaporizes the Oil, which latter can now be turned on more or less, as necessity demands.

- Toextinguish the lamp, it is simply necessary to turn shaftjb in a direction to cut off the flow of oil. The lamp is provided with a hood E for directing the hot air upwardly around the mixingch'amber and with a reroo tlectorK.

In a lamp constructed in accordance with my invention the vaporizing-tube is encircled by the several incandescent mantles, Which serve to heat and vaporize the oil, While the burners and the tubes for conveying vapor thereto are all located above the mantles, and hence the light emitted by the mantles is not intercepted or obstructed by the burners or tubes connected therewith. This is a most important and valuable feature of the invention, for the reason that an intensely brilliant light is produced by the mantles, and in the event the light is obstructed by the burner or any other portionv of the lamp it results in the production of correspondingly dark and well-defined shadows, which are most objection able and annoying and which are obviated by my improved construction of lamp.

It is evident that numerous slight changes might be made in the general form and arrangement of the several parts herein shown and described without departing from the spirit and scope of my invention, and hence I do not wish to limit myself to the precise details of construction herein shown and described; but,

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is-

l. In a hydrocarbon incandescent lamp the combination with a vaporiZing-tube, a mixing-chamber connected with the upper end of said tube and a burner depending from the mixing-chamber, of an incandescent mantle located in close proximity to and at one side of the vaporiZng-tube and having its upper end connected with the depending burner, substantially as set forth.

2. In a hydrocarbon incandescent lamp the combination with a vaporizing-tube, a mixing-chamber connected with the upper end of said tube depending burners communicating with the mixing-chamber and located at the sides of the vaporizing-tube, of incandescent mantles located in close proximity to the yaporizing-tube and connected at their upper ends to said burners, substantially as set forth.

3. In a hydrocarbon incandescent lamp,the combination with a vaporiZing-tube, a mixin g-chamber connected with the upper end of said tube, and a burner connected with the mixing-chamber and depending therefrom, of an incandescent mantle arranged parallel to the upper end of the vaporizing-tnbe and in close proximity thereto, the upper end of the mantle being attached to the burner, and a mantle-holder secured to the lamp-frame and arranged to engage the lower end of the mantle, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

G. WASHINGTON. Witnesses:

A. W. BRIGHT, S. G. NOTTINGHAM. 

